Home / 8,428.03-12,643.53-2,880.07

Finding the Fourth Proportional to 8,428.03, 12,643.53 and 2,880.07

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Solution

The fourth proportional to 8,428.03, 12,643.53 and 2,880.07 is: 4,320.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.03 : 12,643.53 = 2,880.07 : x
  2. Step 2: Convert to fraction form
    8,428.03/12,643.53 = 2,880.07/x
  3. Step 3: Cross multiply
    8,428.03x = 12,643.53 × 2,880.07
  4. Step 4: Simplify right side
    8,428.03x = 36,414,251.45
  5. Step 5: Solve for x
    x = 36,414,251.45/8,428.03
  6. Step 6: Final answer
    x = 4,320.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.